Railway brake mechanism



Feb. 16 N126.

1,573,257 5. N. Looms RAILWAY BRAKE MECHANISM Filed August 11, 1925 2 Sheets-Sheet l Feb. 16 1926.

G. N. LOOMIS RAILWAY BRAKE MECHANISM Patented Feb. 16, 192th units STATES- GEORGE N. LOOMIS, OF RUTH, NEVADA.

RAILWAY BRAKE. IMECHANISM.

Application filed. August 11, 1925.

To all whom it may] concern:

Be it known that I, Gnoaon N. LOOM'IS, a citizen of the United States, residing at Ruth, in the. county of White Pine and State of Nevada, have invented certain new and useful Improvements Railway Brake Mechanisms, of which the following is a specification.

. of the invention is to provide a hand brake mechanism of the character specified having simple means whereby the same may be operatively connected to the air brake system in such a manner that the brake shoes may be applied by an operation of the air brake system without conflict with the operating members of the hand brake mechanism..

Another and important feature of the in vention resides in the fact that the principal parts of the invention may be quickly and easily exposed for inspection and detached if desired without removing the main supporting frame and other parts. A further and equally important object of the invention is to provide a hand brake mechanism. which may be applied to rolling stock of various types, such as box cars, logcars, and flat cars.

Another object is to provide a hand brake mechanism which may be easily applied to standard rolling stock without a material alteration thereof either during the course of manufacture or at any time thereafter.

Other objects and advantages will be apparent during the course of the following description.

' Fig. 2 is a plan view of a motion transmitting mechanism embodied in the invention;

Serial No. 49,571.

Fig. 3 is a vertical transverse sectional view taken on line 33 of Fig. 1;

Fig. l is adet-ail transverse sectional view taken on line l-l of Fig. 2;

Fig. 5 is a plan view illustrating the application of the invention to a flat car.

In the drawings, the numeral 5 designates a car having sill blocks 6 to which the side or angle members 7 of a rectangular frame are bolted or otherwise secured. The frame is provided at one end with an upwardly extending flange 8 which may be secured by bolts or other fastening devices to one end of the car as clearly shown in Fig. 1.

In carrying out the invention the rectangular frame is preferably formed from a single piece of metal provided with longitudinal and transverse incisions which define partly severed portions which may be bent downwardly to define spaced parallel guide members or flanges 10. These flanges 10 form a guiding means for a block 11 through which a screw 12 is threaded as clearly shown in Fig. 2. One end of the screw 12, which, incidentally, has a worm thread, is rotatably extended through a bearing; member 11 at one end of the rectangular frame. The other end of the screw 12 is rotatably extended through the bight portion of a U-shaped bracket 16 and is provided with a pinion 18 which is in constant mesh with a pinion 20 on a vertical shaft 21. Fig. l plainly illustrates that the lower portion of the vertical shaft 21 is 1'0- tatably extended through the upper and lower members 22 and 23 of the bracket 16 and is held in place thereby. The upper portion of the shaft 21 is provided with the conventional hand wheel 25 designed to be turned by the brakeman,

When the hand wheel 25 is turned the screw 12 is turned for moving the block 11 longitudinally of the frame and when the block is thus moved a connecting link or yoke 28 extended through openings 29 in the block is also moved longitudinally to swing the lever 30 to an operative position whereby the shoes 31 and 32 are applied.

It is important to note that the sides of the yoke 28 are slidable through side grooves in the block 11 so that the brake shoes 31 and 32 may be applied by the air brake system independently of the above described mechanism. More specifically, when the air b 'ake s stem is ooerated to a 3 l theshoes 31 and 32 the, lever will, of course, be

. plication of the brake shoes.

swung to an operative position and this will move the yoke 28 longitudinally with respect to the block 11. Fig. 2 plainly illustrates that nuts 3 are threaded on the sides of the yoke 28 and establish a driving connection between theblock and the'yoke when the screw 12 is turned in the proper direction. That is tosay, when the block 11 is moved toward the pinion 18 by the turning of the screw 12tho yoke 28 will be moved in the samedirection for the ap- Gr the yoke 28 may be moved in the direction of the pinion 18 independently of the block 11 by theioperation of the air brake system.

The yoke 28 and more particularly the side of the same, have a generous bearing area in the block 11 and also have sliding contact with the depending end wall 1470f the frame so'that the yoke will not. weigh on the lever 38/ A hand brake system constructed in accordance with this invention entirely eliminates. the chain ordinarily employed as a connecting medium betweenthe shaft 21 and the lever 30. This chain frequently 7 breaks and results in loss of life and damage to the rolling stock. pawl and ratchet mechanism employed in the present day hand brakes is entirely eliminated. V V g V The invention forming the subject mat ter of this application may also be carried out in connection with a flat or log ging car as shown in Fig. 5 and by reference to this figure it will be seen that the vbracket16 may be easily change from a vertical position to a horizontal one and securely bolted in place so as to dispose the operating shaft horizontally. lVhen the operating shaft 60: is thus positioned, the hand wheel 61 of the same is located at or near one side of the car and within convenient reach of the brakeman or other attendant.

a of the car and "is securelyheld in place to withstand the straintowhich the same is subjected and to hold all parts carried there by in their proper positions.

Figs. 1, 3 and lplainlyillustrate that the frame 7 isr provided with a detachable bottom plate 60 held in place by bolts 61. The

Also, the usual bottom plate may be quickly removed for exposing the block 11, the screw 12 and the inner portion of the yoke 28 for inspecting these parts, lubricating the same, or possibly renewing them. plate 60 is removed, the block 11 may be dropped through the under side of the frame subsequentto the removal of the screw '12.

"To remove the screw 12, it is first necessary to detachthe cotter pin 65 at the lower portion of the shaft 21 and then detach the collars 2 1- and the pinion 2O whereupon the shaft 21V1nay be removed. Fig. l plainly shows that the pinion 20 is provided with a sleeve-like hub 66 which rests upon the lower collar 24 and thereby prevents binding of the pinion 20 with the pinion 18. V

The shaft 21 having been removed, the pinion 18 may be detached from the screw 12 so that the screw may in turn be removed through the bottom of the frame. It is thus seen that all of the major parts of the, invention may be quickly disassembled for the removal of any parts found worn or weakened as the result oflong use. Fig. 3illustrates that the sides of the yoke 28 may be spread somewhat so that the same may be removed from the openings 29 which extend out through the sides of the block 11. Ha-vingtlii.is described the invention, what is claimed is: I

1. A railwa i brake er ui .nnent comprisin v L b a frame hav 1g means. whereby, the same may be attached to a railway car, said frame being novided with'de aendin flan es de- 7 c: o a

fining guides, a block positioned between said guides, a screw connected to said block,

a yoke having side members slidably connected to said block, said block being -provided with openings extending out through the sides thereof forthe reception of the sides of said yoke, and nuts threaded on said yoke at one side of said block.

2. A railway brake equipment comprising a frame having means whereby the same may be attached to a railway car, said frame being provided with guides, a block positioned between said guides, a screw con-' nected to said block, a yoke having side i'i'iembcrs slidably connected to'said block, said block being provided with openings extending out through the sides thereof for the reception of the sides of said yoke, nuts threaded on said yoke at one side of said When the bottom tuting guides, a block slidable between said guides and being provided with openings, a

feed screw threaded through said block, a

yoke having approximately parallel sides arranged between said guides and detachably positioned in said openings, nuts threaded on said sides and engaged with one side of said block, said yoke being pro itled with means whereby the same may be connected to brake lever, a bracket of U- shaped formation secured to one end of said frame, an operating shaft extending through said bracket, pinions mounted on said shaft and said screw and being detachable, collars positioned between and engaging opposite sides of said shaft, said bracket being adjustable to a vertical or horizontal position. I at. A handbrake mechanism for railway cars comprising a frame having guides, a block slidable between said guides and being provided with openings extending for the full length thereof and opening out through opposite sides, a feed screw threaded through said block, a yoke having approximately parallel sides arranged between said guides and detachably positioned in said openings, nuts threaded on said sides and engaged with one side of said block, said yol-ce being provided with means whereby the same may be connected to a brake lever, a bracket secured'to one end of said frame, an operating shaft extending through said bracket, pinions mounted on said shaft and said screw and being detachable, collars )ositioned between and (-i1ga 'in onosite p b b sides of said shaft, said bracket being adjustable to a vertical or horizontal position, and a protecting plate extending across the bottom of said frame and protecting said screw and said block.

5. A hand brake mechanism for railway Tars comprising a frame having downwardly directed spaced parallel flanges constituting guides, a block slidable between said guides and being provided with openings extending for the tall length thereof and opening out through opposite sides, a feed screw threaded through said block, a yoke having approximately parallcl sides arranged between said guides and detachably positioned in said openings, nuts threaded on said sides and engaged with one side of said block, said yoke being provided with means whereby the same may be connected to a brake lever, a bracket of U-shaped formation secured to one end of said frame, an operating shai't extending through said bracket, pinions mounted on said shaft and said screw and being detachable, collars positioned between and engaging opposite sides of said shat't, said bracket being adjustable to a vertical or horizontal position, and a proterting plate extending across the bottom of said frame and protecting said screw and said block, one end of said frame being provided with means guiding said yoke.

In testimony whereof I a tlix my signa' ture. 1

GEORGE N. LOOMIS 

